import { AsyncIterableX } from '../asynciterablex';
import { MonoTypeOperatorAsyncFunction } from '../../interfaces';
export declare class FlattenAsyncIterable<TSource> extends AsyncIterableX<TSource> {
    private _source;
    private _depth;
    constructor(source: AsyncIterable<TSource>, depth: number);
    private _flatten;
    [Symbol.asyncIterator](signal?: AbortSignal): AsyncIterator<TSource, any, undefined>;
}
/**
 * Flattens the nested async-iterable by the given depth.
 *
 * @export
 * @template T The type of elements in the source sequence.
 * @param {number} [depth=Infinity] The depth to flatten the async-iterable sequence if specified, otherwise infinite.
 * @returns {MonoTypeOperatorAsyncFunction<T>} An operator that flattens the async-iterable sequence.
 */
export declare function flat<T>(depth?: number): MonoTypeOperatorAsyncFunction<T>;